The present invention consists in a pupil dilating device (1) for dilating apupil and/or maintaining a pupil in a dilated state, said device (1) beinggenerally hook shaped in plan view so as to define an open ended arcuate irisengaging body portion (2) having a distal free end (3) and at or adjacent theother of said ends (5) an integral positioning arm (4) extending outwardly ina generally radial direction therefrom, the positioning arm (4) being sized toextend in use beyond the outer periphery of the iris; said body portion (2)including: an iris engaging formation or formations (6, 7) being adapted toreceive and retain the inner peripheral edge of an iris in an expanded state;and, at least one instrument engaging formation (11) at or adjacent saiddistal free end (3) to enable contraction of the body portion (2) tofacilitate engaging location within the iris.
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